Type-writing machine.



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' TYPE WBTHG MACHINE,

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Blf-fassa 2 SHEETS-SEBET l.

UNTTED STATES PATENT clarion.I

FRANK ROBINSON, OF NEW YORK, N. Y., ASSIGNOR TO UNDERWOOD TYPEWRITER v COMPANY, OF NEW YORK, N. Y., A CORPORATION F DELAWARE.

Tarn-WRITING MACHINE.

'Spcclilcatlon of Letters Patent.

Patented July '7, 1914.

Application tiled May 28, 1912. Serial No. 700,144.

To all 'zo/uom, it may concern Be it known that I, FRANK A. Ronmson, a citizen of the United States, residin 1n thc borough of Brooklyn, city of New ork, in the county of Kings and State of New York, have invented certain new and useful Improvements 'in Type-Writing Machines, of which the following is a specification.

My invention relates to typewriting machines, and particularly to improved means for feeding a worksheet around the platen of a typewriting machine.

The invention is herein shown as applied to an Underwood typewriting machine having a revolving platen. As this platen rotates. it carries along$ with it pinsor studs which are so spaced as to register with open ings in the worksheet which is to be placed on the platen, said pins being prefera ly 1n the form of conical projections of a platen surface extensionin the form of a flexible strip or band, one end of which band is attached to the body of the platen. When the worksheet is to be inserted, a free end of this extension is led out alon a table, mounted on the frame on which t xe platen is mounted. In this position, a worksheet may be readily placed upon it. When the platen is then turned in line-spacing direction, it wlnds up thc band on it, thus positively drawin the worksheet along, the outer surface o the baud forming part of the platen surface engaged by the work-sheet. The band may be caused to ride out along the table by rotatin the .laten backward, and when the fu lengti of the band has been thus extended on thc table', a stop may be arranged to arrest the platen against furtherrotation. On the table there may be-formed a track with which part of. the band engages to hold it down fiat on the table to reserve the alinement of theband perpen icular to the axis of the platen. The platen frame may if desired, comprise the usual paper table and pressure rolls for feedin t e paper.

'Other features and a vantages will hereinafter. appear. y 'In the accom anying drawings,l Figure-1 is aplan-vicwo 'a typewriter carriage showing my inventiomf.' Fig. 2y is a sidey View .of thesame. Figa shows a worksheetadapted to be usediinjconnectionwithvmy invention. Fig-A' isa :front-'view of a typewriter carringo.v on aj'somewhat-larger scalo thanf-Fi 1f lFig.' 5 isfa' perspective'view ofthe tab e.

which guides the extension, and some other parts. Fig. 6 is a plan section of the end of a platen, showing the extension in position. Fig. 7 is a transverse section of the same. F1 8 is a detail. Fig. S) is a per spective View of the platen and extension.

On the frame 1 of an ordinary Underwood typewriting machine is a traveling carriage 2 in which is mounted the usual platen frame 3 comprising ends 1 and 5 connected by a paper table 6 and by a tie rod 7 A platen 8 is journaled in said platen frame on its axle 9, and may be turned therein to feed a worksheet by hand wheel 10 or. a line-space lever 11, said line-space lever operating throu h a slide 12 on a ratchet wheel 13, and tie throw of said linespace lever may be adjusted by the lever 14. The work-sheet 16 comprises perforations '15, and it may be guided onto the body of the platen by laying it on the extension 18 so that its perforations fit over conical pins o-r studs 17 on said extension. This extension 18 is fast at one end to the platen by screws 19 so that it is drawn along and wound on the platen carrying the worksheet with it as the laten rotates in linespacing direction. he stri or band 18 when wound is substantially ush with, and forms part of the platen surface which supports tie work-sheet. When unwound this strip is a development of a portion or layer of the platen surface, and constitutes a platen surface extension ada I)ted to receive a work-sheet while flat, an then wind it on the body of the roller platen. The free end of said extension is held in position to have the worksheet placed thereon by means of a table 20, and is held down by an overhangng rail 21 as it slides on said table. Pins 22 on said extension, holding it alined are arranged to travel in a slot 21 formed by said lrail,'and an extension 26 of said rail is formed on the platen frame ond 4 or 5 so as to closely surround the platen and hold the pins 22 to preserve the alinemcnt of the extension, as said extension is wound or unwound as the platen is rotated. The extension 18 is preferably a thin resilient metal strip.

.The table'20 may be cut away to form a slot 23, andthe laten may be cut away to form a channel 4 under the extension 18, so that said extension tends to lie smooth. Said cut-away portions will accommodate lOl claim: l,

any ends of pins 17 which may project below said extension.

The length ofuthe free portion of the belt 1S is preferably no greater than the circumference of the platen, and when completely wound thereon, constitutes a temporary girdle therefor, and holds its ins 17 spaced equally around the 'circuin erence thereof during subsequent revolutions of the platen, so that the perforations in the wort-sheet may register successively with the pins and catch thereon, and a long work-sheet may be fed uniformly andv positively around the platen without tearing. After a worksheet has been completely filled out and is removed from the platen, the rotation of the platen is reversed; and when the free ond 25 of the extension 18 comes to the point where the rail 21 merges with the rail 26, the resiliency of thc extension will cause said free end to uncol, and it will travel out and back along the table 20. 4This presents the pins 17 in position on the table 20 to have a new worksheet placed thereon.

When the free end 25 of the extension has reached its farthest limit, so that the extension 1S extends substantially, its whole `lengthen the table Q0, the backward rotation of the platen is positively arrested by means of a spring detent 27 arranged to enter an opening 28 in said platen. In the forward rotation of the platen, however, said detent is pushed idly aside by the rotation ofthe platen. Said detent carries a'handle 29 by which it;may be moved to inoperative position at will. v

TheI outer edge V3.0 ,of Athe table 2O may be steadied by a bracket 31, and the upturned edge 32,0f saidtable acts as a girder to give the tableA stiffness. The table may be attached to the end frame by means of a screw 33 and a screw 84.

The platen fraaie may include the usual envelop guide 40 and the front and rear pressure rolls 37 and 38. The tie rod7 is cut away at 35 and the paper table 6 is cut away at 39 to permit said pins 17 to pass.

In Fig. 1.a Worksheet is shown in dotted line position lying onthe laten and the extension 18. I ere .the wor tsheet is shown as en aging an extension and pins 17 at each en( as 1s preferable in very exact work. It will be noted that while the perforations l5 in the-worksheet maybe utilized in loose leaf ledgers, for exam le, that they need not be an integral parto the sheet, but may be placed on a part of the sheet whiehmay be later tornof and destroyed, and for this purpose the Worksheet maybe `perforated as at 41. n l

Variations mayfbefresorted towitliin the seopaofthe invention,. and 4portions of the improvements mayfbe .used .without others.

Having',` thus described f my invention, I

1. In a typewritin machine, the combination with a rotatavb e platen, of an extension fastto said platen and wound on said )laten 'by rotating the platen in line spacing direction, a table onto which the free end of said extension 'slides when the platen is reversely rotated, and a detent positively arresting said platen in its reverse rotation.

2. In a typewriting machine, the combination with a rotatable platen, of an extension attached at one end to said pliiteii and forming part of the receiving surface of the platen, said extension arranged to extend substantially around the circumference of the platen, and pins on said extension set at intervals such vthat when said extension is wound on the platen, said pins are imiformly spaced around its entire circumference.

2%. The combination Vwith a revoluble platen. of an extension connected at one of its ends to said platen to-wrap once only tlierearound, and form part of the worksheet holding surface of the platen, and work-carrying devices upon said extension.

4. The combination with a revoluble platen, of an extension connected at one of its ends to said platen to wind therearound, work-carrying devices upon said extension,

.and a table wliereon said extension may be extended when unwound -from the platen by a'reverse rotation of the platen.

5. The combination with a revoluble platen, of an extension connected at one of its ends to said platen to windtherearound, work-carrying devices upon said extension, a table wliereon said extension may be extended When unwound fromthe platen by a reverse rotation of the platen, and a guiding device for said extension extending along said table.

6. The combination with a revolublc platen, of an extension connected at one of its ends to said `ilaten to wind tlierearou'nd,

'work-carrying eviccs'upon said extension,

a-table whereon said extension may be ex- -tendedwhen unwound from the platen by a reverse rotation of the platen, and a guiding device for said extension extending along said table and around said platen.

7. The `combination `with a revoluble platen, of an extension connected at one of its ends to said platen to wind thcrearoiind, work-carrying devices upon said extension, a table'wliereon said extension may be extended'when unwound from the platen by a reverso rotation of the platen, a guiding device for said extension extending along said table, and means on said extension to engage said guiding device.

8( Thel combination with a revoliible platen, of an extension connected at one of its ends to said platen to wind tlierearound, work carrying 4devices upon said extenlsion, a table whereon said extension may be ies extended when unwound from the platen by a reverse rotation of the platen, and a lguiding device for said extension extending along said table` and around said platen, said guiding device `having a channel extending along said table and around said platen, to guide the free end of the said extension away from the platen when the latter is rotated in reverso direction.

9. The combination with a revoluble platen, of a platen surface extension connected at one of its ends to said platen to wind tberearoulul, work-carrying devices upon said extension, a table extending forwardat a tangent from the upper surface of the platen, whereon said extension may be extended when unwound from the platen by a reverse rotation of the platen, a guiding device for said extension extending along said table, and a stop to arrest the backward rotation of the platen when the said extension is extended along said table..

l0. The combination with a revoluble platen, of a flexible strip forming a platen surface extension connected at one of its ends to said platen to wind therearound, work-carrying devices upon said strip, a table whereon said strip may be extended when unwound from the platen by a reverse rotation of the laten a guiding device for said strip extending along said table, and a stop to arrest the backward rotation of the platen when the said strip is extended upon said table, said stop being ineffective to arrest the forward rotation of said platen.

11. The combination with a revoluble platen, of a platen surface extension connected at one of its ends to said platen to wrap once only therearound, and workcarrying devices upon said extension, said extension located to one side of the printing field on the platen.

12. The combination with a revoluble platen, of a platen surface extension connected at one of its ends to said platen to wind tberearound, and work-carrying dovices upon said extension, said extension being of a length to extend once only around the platen to form a girdle rotatable bodily with tbe platen and capable of advancing a work-sheet for several successive revolutions ofthe laten.

13. he combination with a revoluble platen, of a air of extensions arranged at the ends of t e fplaten, each extension connected at one o its ends to said platen to wind therearound, work-carrying devices upon said extensions and ta les whereon said extensions may be extended when unwound from the platenby a reverse rotation ofthe platen...

.14. lhevl combination with a revolublo platen, of-a air of extensions arranged at the ends of t e laten, each extension connected-at one .'o .its endsto said platen to` wind therearound, work-carrying devices upon said extensions, tables wbereon said extensions may be extended when unwound from the platen by a reverse rotation of the platen, and guiding devices Ator said extensions extending along said tables to engage the outer edges of said extensions.

15. The combination with a revolublc platen, of a pair of extensions arranged at the ends of the platen, each extension connected at one ot' its ends to wind therearound, work-carrying devices upon said extensions, and guiding devices arranged along the outer edges of said extensions and continuing around said platen.

16. The combination with a rcvolnblc platen, of a pair of platen surface extensions arranged at the ends of the platen, each extension connected at one. oic its ends to said platen to wind tberenrouiul, workiarrying devices upon said extensions. and guiding devices arranged to extend along the outer edges of said extensionswhen the. extensions extend anzay -lroin the platen` said guiding devicescontinuing around said platen; means heilig provided on said extensions to engage said guiding devices.

17. The combination with a rcvolnble platen, of a pair of extensions arranged at the ends of the platen, each extension connected at one of its ends to said platen to wind therearound, work-carrying devices upon said extensions, tables whereon said extensions may be extended when unwound from the platen by a reverse rotation of the platen, and guiding devices for said extensions extending along said tables to engage. the outer edges of said extensions; said guiding devices formed with channels extending around said platen and along said tables, to guide the free ends ot the extensions away from the platen when the latter is rotated in the reverse direction.

18. The combination with a revolnble platen, of a pair of extensions arranged at the ends of the platen, each extension connected at one of its ends to said platen to wind tbercarouinfl, and work-carrying devices upon said extensions; cacb extension being of a length to extend once around the platen and rotatable with the platen when wound thercaround, so that the extensions may form girdles capable ot cooperating to advance a work-sheet for several successive revolutions of the platen.

19. In a typewriting machine, the combination with a rotatable platen, of a platen surface extension ,fast at one end to said laten to wrap once only thereon to malte a girdle therefor and rotatable bodily with the platen, and pins on said extension adapt;- ed to engage a work-sheet.

20. In a typewriting machine, the combination with a rotatable platen, of a platen surface extension fast at one end 'to said ed to engage a Work-sheet, and a table on which said'extension may lie flat to permit,

a work-sheet to be adjusted on the pins.

21. In a typewriting machine, the combination with a rotatable platen, of a band traveling around said platen as it rotates, work-positioning pins on said band, and

ins carried by the band and holding said and alined as ittravels.

22. In a typewriting machine, the combination with a rotatable-platen, of a frame in which said platen rotates, a table on said frame, a platen surface extension fast to said platen and arranged to lie on said table when extended, and a guide holding said extension alined as it extends on said table and is being drawn onto the platen as the latter rotates.

23. In a typewritinfT machine, the combination with a rotatable platen, of a platen surface extension fast to said laten, to wind thereon to make a girdle tierefor, a plurality of pins on said extension adapted to engage a Work-sheet, and means extending around a portion of the laten to hold said extension alined as the p aten rotates.

24. A rotatable platen having a core or body, and including a. flexible platen-surface section fast at one end to said platen and capable of tangential extension to receive a work-sheet while flat, and free to be wrapped once only` around the platen core and to form a part of the surface upon which the work-sheet is wrapped when in operative position on the platen.

25. The combination with a rotatable platen having a core and includingr a flexible platen-surface section fast at one end to said platen and capable of tangential extension, a support for said section whenextended, said section being` free to be wrapped once only around the platen, and work-holding devices on said section.

26. The combination with a rotatable platen having a core and including platensurface sections fast at one end to said platen ends, said sections being of extent to wrap once only around the platen and-capable of tangential extension to receive a work-sheet while extended or flat, and a series of workholding pins on each section, the pins of the two series being in register to permit a worksheet provided with corresponding.,r perforations to be placed at diierent positions along said sections.

27.Arotatable platen including` flexible platen-surface sections connected at one end to the platen and capable of tangential extension, and free to be wrapped once only around the body of the platen, said sections each provided with a row of etpially spaced ins, the'pins ofthe tworows eing in register to ,permit a .work-,sheet provided with corresponding perforations to be placed in dillerent positions alongr said sections.

QS. The combination with a rotatable platen, of supporting tables adjacent the ends of the platen and extending at a tangent therefrom, Said platen having surface sections in the form of flexible strips each attached at one end to the platen and extending outward therefrom over said tables, said strips free to be wrapped once only around the platen body to form portions of the platen, and a row of work-holding pins connected to each strip.

29. The combination with a rotatable platen, of supporting tables adjacent the ends of the platen and extending at a tangent therefrom, said platen having' surface sections in the form oll llcxible strips each attached at one end to the platen and extendingr outward therefrom over said tables, Said strips free to be wrapped around the platen body to forni portions of the platen, and a row of work-holdingr pins connected to each strip, said tables 'formed with recesses or slots beneath the pins, and the platen formed with annular recesses beneath said pins when the said strips are wrapped.

530. ln a typewriting machine, the coinhinution with a rotatable platen` ot a flexible platen surface extension fast at one end to said platen and whose extent permits it lo wrap once only around the platen to form u temporary platen, and pins on said extension forming a. circular row when wrapped around the platen and arranged to successively register with pertorations on a work-sheet..

ill. A revoluble platen provided with an extension fast. at one end thereto and orming :l girdle. having work-carrying devices thereon, to advance a work-sheet during consecutive revolutions of the platen; said extension constructed to be extended away from the platen and to bc entirely wrapped once only around the platen.

89. A revoluble platen provided with an extension fast at one end thereto and forniing a girdle havingr work-carrying devices thereon, to advance a. work-sheet. duringr cmisccutive revolutions of the platen; said extension constructed to be extended away troni tho platen and free to be wrapped once only around the platen and rotated bodily therewith, and ay support lor thc extension when in cxteiuled position.

Bil. 'lhc c nnhimltion with a rcvolublc platen having annular recesses adjacent. ils ends, of strips 'fast at one ond to said platen to wrap once only around the platen und over said recesses to constitute a portion of the platen surface, and having work-carryvinar studs or devices thereon: means being provided to cause the strips to travel iu unison with tho platen.

84:. The combination with a rcvolnblo los 

